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Tandem Diabetes Care

270 hedge funds and large institutions have $1.51B invested in Tandem Diabetes Care in 2025 Q2 according to their latest regulatory filings, with 40 funds opening new positions, 117 increasing their positions, 70 reducing their positions, and 43 closing their positions.

New
Increased
Maintained
Reduced
Closed

more call options, than puts

Call options by funds: $ | Put options by funds: $

more repeat investments, than reductions

Existing positions increased: | Existing positions reduced:

more ownership

Funds ownership:

more capital invested

Capital invested by funds: $ → $

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

7% less first-time investments, than exits

New positions opened: 40 | Existing positions closed: 43

2% less funds holding

Funds holding: 275270 (-5)

Holders
270
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$54.4M
Puts
$4.81M
Net Calls
Net Calls Change

Top Buyers

1 +$29M
2 +$23.3M
3 +$14.7M
4
Two Sigma Investments
Two Sigma Investments
New York
+$11.7M
5
Walleye Capital
Walleye Capital
New York
+$11.2M
Name Holding Trade Value Shares
Change
Change in
Stake
176
$274K
177
$252K
178
$243K
179
$231K
180
$227K
181
$227K
182
$221K
183
$220K
184
$212K
185
$204K
186
$194K
187
$189K
188
$188K
189
$179K
190
$173K
191
$173K
192
$171K
193
$143K
194
$128K
195
$122K
196
$115K
197
$115K
198
$110K
199
$88.2K
200
$77.7K